Hello In order to fix it I had to enable the GRASS plugin (is already installed) then import the raster , and run the plugin's r.grow.distance with geodesic and it worked.
I just tried this and it worked Thanks for your help!!! As a local workaround, you can simply search for r.grow.distance.txt on your computer and add the missing "geodesic" there. (and open an issue with the QGIS project or open a pull request with the change there, or someone else does that). Kind regards Dimitris Στις Παρ, 2 Αυγ 2019 στις 12:53 μ.μ., ο/η Markus Neteler <[email protected]> έγραψε: > Hi Dimitris, > > On Fri, Aug 2, 2019 at 8:58 AM Dimitris sal <[email protected]> wrote: > > > > Hello everyone > > > > My first post in this list, > > > > So i am trying to create a raster with r.grow.distance. > > As you are working via QGIS, in which projection do you work? > > > If i use the normal options everything works like the proximity analysis > of QGIS, but when I try to add the advanced parameter Output distances in > meters instead of map units i get the error "ERROR: Output distance in > meters for lat/lon is only possible with 'metric=geodesic'" > > > > How do i add in the metrics the geodesic? I only have 4 > euclidean,manhattan,squared,maximum. > > Yes, this is a limitation in QGIS processing (for whatever reason). > The parameters made available to the QGIS users are often a subset of > those provided by GRASS GIS. > > # QGIS processing > grep Metric > /usr/share/qgis/python/plugins/processing/algs/grass7/description/r.grow.distance.txt > > QgsProcessingParameterEnum|metric|Metric|euclidean;squared;maximum;manhattan|False|0|True > > # GRASS GIS > r.grow.distance --help > ... > metric Metric > options: euclidean,squared,maximum,manhattan,geodesic > default: euclidean > > The change would be needed here: > > https://github.com/qgis/QGIS/blob/release-3_8/python/plugins/processing/algs/grass7/description/r.grow.distance.txt > > > Is there any alternative to create the raster in meters instead of map > units? > > As a local workaround, you can simply search for r.grow.distance.txt > on your computer and add the missing "geodesic" there. > (and open an issue with the QGIS project or open a pull request with > the change there, or someone else does that). > > Best, > Markus > > -- > Markus Neteler, PhD > https://www.mundialis.de - free data with free software > https://grass.osgeo.org > https://courses.neteler.org/blog >
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